In a class of students, there are three types of projects: science, art, and literature. John is not working on a science project. Sarah is working on an art project. Tom is not working on a literature project. Which student is working on a science project?
Four friends, John, Mike, Sarah, and Emma, are ranked based on their scores: John scored higher than Sarah but lower than Mike. Emma scored the lowest. What is the correct order from highest to lowest?